package com.ti.demo.autoconfigure;

import com.ti.demo.model.DeepSeekChatImageModel;
import io.micrometer.observation.ObservationRegistry;
import org.springframework.ai.chat.observation.ChatModelObservationConvention;
import org.springframework.ai.deepseek.api.DeepSeekApi;
import org.springframework.ai.model.SimpleApiKey;
import org.springframework.ai.model.SpringAIModelProperties;
import org.springframework.ai.model.SpringAIModels;
import org.springframework.ai.model.deepseek.autoconfigure.DeepSeekChatProperties;
import org.springframework.ai.model.deepseek.autoconfigure.DeepSeekConnectionProperties;
import org.springframework.ai.model.tool.DefaultToolExecutionEligibilityPredicate;
import org.springframework.ai.model.tool.ToolCallingManager;
import org.springframework.ai.model.tool.ToolExecutionEligibilityPredicate;
import org.springframework.ai.model.tool.autoconfigure.ToolCallingAutoConfiguration;
import org.springframework.ai.retry.autoconfigure.SpringAiRetryAutoConfiguration;
import org.springframework.beans.factory.ObjectProvider;
import org.springframework.boot.autoconfigure.AutoConfiguration;
import org.springframework.boot.autoconfigure.ImportAutoConfiguration;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.autoconfigure.web.client.RestClientAutoConfiguration;
import org.springframework.boot.autoconfigure.web.reactive.function.client.WebClientAutoConfiguration;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.retry.support.RetryTemplate;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;
import org.springframework.web.client.ResponseErrorHandler;
import org.springframework.web.client.RestClient;
import org.springframework.web.reactive.function.client.WebClient;

/**
 * @description: com.ti.demo.configuration
 * @Author Triagen
 * @Date 2025/9/26 15:39
 */
@AutoConfiguration(after = {RestClientAutoConfiguration.class, WebClientAutoConfiguration.class,
        SpringAiRetryAutoConfiguration.class, ToolCallingAutoConfiguration.class})
@ConditionalOnClass(DeepSeekApi.class)
@EnableConfigurationProperties({DeepSeekConnectionProperties.class, DeepSeekChatProperties.class})
@ConditionalOnProperty(name = SpringAIModelProperties.CHAT_MODEL, havingValue = SpringAIModels.DEEPSEEK,
        matchIfMissing = true)
@ImportAutoConfiguration(classes = {SpringAiRetryAutoConfiguration.class, RestClientAutoConfiguration.class,
        WebClientAutoConfiguration.class, ToolCallingAutoConfiguration.class})
public class DeepSeekChatImageAutoConfiguration {

    @Bean
    @ConditionalOnMissingBean
    public DeepSeekChatImageModel deepSeekChatImageModel(DeepSeekConnectionProperties commonProperties,
                                                         DeepSeekChatProperties chatProperties, ObjectProvider<RestClient.Builder> restClientBuilderProvider,
                                                         ObjectProvider<WebClient.Builder> webClientBuilderProvider, ToolCallingManager toolCallingManager,
                                                         RetryTemplate retryTemplate, ResponseErrorHandler responseErrorHandler,
                                                         ObjectProvider<ObservationRegistry> observationRegistry,
                                                         ObjectProvider<ChatModelObservationConvention> observationConvention,
                                                         ObjectProvider<ToolExecutionEligibilityPredicate> deepseekToolExecutionEligibilityPredicate) {

        var deepSeekApi = deepSeekApi(chatProperties, commonProperties,
                restClientBuilderProvider.getIfAvailable(RestClient::builder),
                webClientBuilderProvider.getIfAvailable(WebClient::builder), responseErrorHandler);

        var chatModel = DeepSeekChatImageModel.builder()
                .deepSeekApi(deepSeekApi)
                .defaultOptions(chatProperties.getOptions())
                .toolCallingManager(toolCallingManager)
                .toolExecutionEligibilityPredicate(deepseekToolExecutionEligibilityPredicate
                        .getIfUnique(DefaultToolExecutionEligibilityPredicate::new))
                .retryTemplate(retryTemplate)
                .observationRegistry(observationRegistry.getIfUnique(() -> ObservationRegistry.NOOP))
                .build();

        observationConvention.ifAvailable(chatModel::setObservationConvention);

        return chatModel;
    }

    private DeepSeekApi deepSeekApi(DeepSeekChatProperties chatProperties,
                                    DeepSeekConnectionProperties commonProperties, RestClient.Builder restClientBuilder,
                                    WebClient.Builder webClientBuilder, ResponseErrorHandler responseErrorHandler) {

        String resolvedBaseUrl = StringUtils.hasText(chatProperties.getBaseUrl()) ? chatProperties.getBaseUrl()
                : commonProperties.getBaseUrl();
        Assert.hasText(resolvedBaseUrl, "DeepSeek base URL must be set");

        String resolvedApiKey = StringUtils.hasText(chatProperties.getApiKey()) ? chatProperties.getApiKey()
                : commonProperties.getApiKey();
        Assert.hasText(resolvedApiKey, "DeepSeek API key must be set");

        return DeepSeekApi.builder()
                .baseUrl(resolvedBaseUrl)
                .apiKey(new SimpleApiKey(resolvedApiKey))
                .completionsPath(chatProperties.getCompletionsPath())
                .betaPrefixPath(chatProperties.getBetaPrefixPath())
                .restClientBuilder(restClientBuilder)
                .webClientBuilder(webClientBuilder)
                .responseErrorHandler(responseErrorHandler)
                .build();
    }

}
